wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2003, Psyent Corporation <www.psyent.com> |
| 3 | * Scott McNutt <smcnutt@psyent.com> |
| 4 | * |
| 5 | * (C) Copyright 2000-2002 |
| 6 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 7 | * |
| 8 | * See file CREDITS for list of people who contributed to this |
| 9 | * project. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License as |
| 13 | * published by the Free Software Foundation; either version 2 of |
| 14 | * the License, or (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 24 | * MA 02111-1307 USA |
| 25 | */ |
| 26 | |
| 27 | #include <common.h> |
| 28 | #include <devices.h> |
| 29 | #include <watchdog.h> |
wdenk | 3da587e | 2003-10-19 23:22:11 +0000 | [diff] [blame] | 30 | #include <net.h> |
wdenk | 3be717f | 2004-01-03 19:43:48 +0000 | [diff] [blame] | 31 | #ifdef CONFIG_STATUS_LED |
| 32 | #include <status_led.h> |
| 33 | #endif |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 34 | |
Wolfgang Denk | 6405a15 | 2006-03-31 18:32:53 +0200 | [diff] [blame] | 35 | DECLARE_GLOBAL_DATA_PTR; |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 36 | |
| 37 | /* |
| 38 | * All attempts to come up with a "common" initialization sequence |
| 39 | * that works for all boards and architectures failed: some of the |
| 40 | * requirements are just _too_ different. To get rid of the resulting |
| 41 | * mess of board dependend #ifdef'ed code we now make the whole |
| 42 | * initialization sequence configurable to the user. |
| 43 | * |
| 44 | * The requirements for any new initalization function is simple: it |
| 45 | * receives a pointer to the "global data" structure as it's only |
| 46 | * argument, and returns an integer return code, where 0 means |
| 47 | * "continue" and != 0 means "fatal error, hang the system". |
| 48 | */ |
| 49 | |
| 50 | |
| 51 | extern void malloc_bin_reloc (void); |
| 52 | typedef int (init_fnc_t) (void); |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 53 | |
| 54 | /* |
| 55 | * Begin and End of memory area for malloc(), and current "brk" |
| 56 | */ |
| 57 | static ulong mem_malloc_start = 0; |
| 58 | static ulong mem_malloc_end = 0; |
| 59 | static ulong mem_malloc_brk = 0; |
| 60 | |
| 61 | /* |
| 62 | * The Malloc area is immediately below the monitor copy in RAM |
| 63 | */ |
| 64 | static void mem_malloc_init (void) |
| 65 | { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 66 | mem_malloc_start = CONFIG_SYS_MALLOC_BASE; |
| 67 | mem_malloc_end = mem_malloc_start + CONFIG_SYS_MALLOC_LEN; |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 68 | mem_malloc_brk = mem_malloc_start; |
| 69 | memset ((void *) mem_malloc_start, |
| 70 | 0, |
| 71 | mem_malloc_end - mem_malloc_start); |
| 72 | } |
| 73 | |
| 74 | void *sbrk (ptrdiff_t increment) |
| 75 | { |
| 76 | ulong old = mem_malloc_brk; |
| 77 | ulong new = old + increment; |
| 78 | |
| 79 | if ((new < mem_malloc_start) || (new > mem_malloc_end)) { |
| 80 | return (NULL); |
| 81 | } |
| 82 | mem_malloc_brk = new; |
| 83 | return ((void *) old); |
| 84 | } |
| 85 | |
| 86 | |
| 87 | /************************************************************************ |
| 88 | * Initialization sequence * |
| 89 | ***********************************************************************/ |
| 90 | |
| 91 | init_fnc_t *init_sequence[] = { |
| 92 | |
wdenk | da55c6e | 2004-01-20 23:12:12 +0000 | [diff] [blame] | 93 | #if defined(CONFIG_BOARD_EARLY_INIT_F) |
| 94 | board_early_init_f, /* Call board-specific init code early.*/ |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 95 | #endif |
| 96 | |
| 97 | env_init, |
| 98 | serial_init, |
| 99 | console_init_f, |
| 100 | display_options, |
| 101 | checkcpu, |
| 102 | checkboard, |
| 103 | NULL, /* Terminate this list */ |
| 104 | }; |
| 105 | |
| 106 | |
| 107 | /***********************************************************************/ |
| 108 | void board_init (void) |
| 109 | { |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 110 | bd_t *bd; |
| 111 | init_fnc_t **init_fnc_ptr; |
wdenk | 3da587e | 2003-10-19 23:22:11 +0000 | [diff] [blame] | 112 | char *s, *e; |
| 113 | int i; |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 114 | |
| 115 | /* Pointer is writable since we allocated a register for it. |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 116 | * Nios treats CONFIG_SYS_GBL_DATA_OFFSET as an address. |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 117 | */ |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 118 | gd = (gd_t *)CONFIG_SYS_GBL_DATA_OFFSET; |
wdenk | 3337af4 | 2004-07-01 20:28:03 +0000 | [diff] [blame] | 119 | /* compiler optimization barrier needed for GCC >= 3.4 */ |
| 120 | __asm__ __volatile__("": : :"memory"); |
| 121 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 122 | memset( gd, 0, CONFIG_SYS_GBL_DATA_SIZE ); |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 123 | |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 124 | gd->bd = (bd_t *)(gd+1); /* At end of global data */ |
| 125 | gd->baudrate = CONFIG_BAUDRATE; |
| 126 | gd->cpu_clk = CONFIG_SYS_CLK_FREQ; |
| 127 | |
| 128 | bd = gd->bd; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame] | 129 | bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; |
| 130 | bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE; |
| 131 | bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; |
| 132 | #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE) |
| 133 | bd->bi_sramstart= CONFIG_SYS_SRAM_BASE; |
| 134 | bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; |
wdenk | c0bc2e1 | 2004-02-09 23:12:24 +0000 | [diff] [blame] | 135 | #endif |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 136 | bd->bi_baudrate = CONFIG_BAUDRATE; |
| 137 | |
| 138 | for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { |
wdenk | e537b3b | 2004-02-23 23:54:43 +0000 | [diff] [blame] | 139 | WATCHDOG_RESET (); |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 140 | if ((*init_fnc_ptr) () != 0) { |
| 141 | hang (); |
| 142 | } |
| 143 | } |
| 144 | |
wdenk | e537b3b | 2004-02-23 23:54:43 +0000 | [diff] [blame] | 145 | WATCHDOG_RESET (); |
Stefan Roese | b81464e | 2009-05-11 15:50:12 +0200 | [diff] [blame] | 146 | mem_malloc_init(); |
| 147 | malloc_bin_reloc(); |
| 148 | |
| 149 | WATCHDOG_RESET (); |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 150 | bd->bi_flashsize = flash_init(); |
| 151 | |
wdenk | e537b3b | 2004-02-23 23:54:43 +0000 | [diff] [blame] | 152 | WATCHDOG_RESET (); |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 153 | env_relocate(); |
| 154 | |
wdenk | 5561847 | 2003-10-28 09:14:21 +0000 | [diff] [blame] | 155 | bd->bi_ip_addr = getenv_IPaddr ("ipaddr"); |
wdenk | 5561847 | 2003-10-28 09:14:21 +0000 | [diff] [blame] | 156 | |
wdenk | e537b3b | 2004-02-23 23:54:43 +0000 | [diff] [blame] | 157 | WATCHDOG_RESET (); |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 158 | devices_init(); |
| 159 | jumptable_init(); |
| 160 | console_init_r(); |
| 161 | /* |
| 162 | */ |
| 163 | |
wdenk | e537b3b | 2004-02-23 23:54:43 +0000 | [diff] [blame] | 164 | WATCHDOG_RESET (); |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 165 | interrupt_init (); |
wdenk | 3be717f | 2004-01-03 19:43:48 +0000 | [diff] [blame] | 166 | |
| 167 | #ifdef CONFIG_STATUS_LED |
| 168 | status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING); |
| 169 | #endif |
| 170 | |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 171 | /* main_loop */ |
| 172 | for (;;) { |
| 173 | WATCHDOG_RESET (); |
| 174 | main_loop (); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | |
| 179 | /***********************************************************************/ |
| 180 | |
| 181 | void hang (void) |
| 182 | { |
wdenk | 3be717f | 2004-01-03 19:43:48 +0000 | [diff] [blame] | 183 | #ifdef CONFIG_STATUS_LED |
| 184 | status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); |
| 185 | status_led_set(STATUS_LED_RED, STATUS_LED_BLINKING); |
| 186 | #endif |
wdenk | 60164a8 | 2003-10-08 23:26:14 +0000 | [diff] [blame] | 187 | puts("### ERROR ### Please reset board ###\n"); |
| 188 | for (;;); |
| 189 | } |
Mike Frysinger | 0870e47 | 2008-04-13 19:42:19 -0400 | [diff] [blame] | 190 | |
| 191 | unsigned long do_go_exec (ulong (*entry)(int, char *[]), int argc, char *argv[]) |
| 192 | { |
| 193 | /* |
| 194 | * x86 does not use a dedicated register to pass the pointer |
| 195 | * to the global_data |
| 196 | */ |
| 197 | argv[-1] = (char *)gd; |
| 198 | return entry (argc, argv); |
| 199 | } |